/*
 * Copyright 2002-2019 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.transaction;

/**
 * Common representation of the current state of a transaction. Serves as base interface for {@link
 * TransactionStatus} as well as {@link ReactiveTransaction}.
 *
 * @author Juergen Hoeller
 * @since 5.2
 */
public interface TransactionExecution {

	/**
	 * Return whether the present transaction is new; otherwise participating in an existing
	 * transaction, or potentially not running in an actual transaction in the first place.
	 * <p>
	 * 是否是一个新的事务
	 */
	boolean isNewTransaction();

	/**
	 * Set the transaction rollback-only. This instructs the transaction manager that the only
	 * possible outcome of the transaction may be a rollback, as alternative to throwing an
	 * exception which would in turn trigger a rollback.
	 * <p>
	 * 仅回滚设置
	 */
	void setRollbackOnly();

	/**
	 * Return whether the transaction has been marked as rollback-only (either by the application or
	 * by the transaction infrastructure).
	 * <p>
	 * 是否仅回滚
	 */
	boolean isRollbackOnly();

	/**
	 * Return whether this transaction is completed, that is, whether it has already been committed
	 * or rolled back.
	 * <p>
	 * 是否已经完成
	 */
	boolean isCompleted();

}
